25257680874 has 64 divisors (see below), whose sum is σ = 59561395200. Its totient is φ = 7916656176.

The previous prime is 25257680873. The next prime is 25257680891. The reversal of 25257680874 is 47808675252.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 25257680874.

It is not an unprimeable number, because it can be changed into a prime (25257680873) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99064 + ... + 245619.

It is an arithmetic number, because the mean of its divisors is an integer number (930646800).

Almost surely, 2^25257680874 is an apocalyptic number.

25257680874 is an abundant number, since it is smaller than the sum of its proper divisors (34303714326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25257680874 is a wasteful number, since it uses less digits than its factorization.

25257680874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344776 (or 344770 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 25257680874 in words is "twenty-five billion, two hundred fifty-seven million, six hundred eighty thousand, eight hundred seventy-four".